Theory and shop assignments on the installation and troubleshooting of gas fired hydronic heating systems, setting and piping of gas fired boilers, and installation of different types of hydronic heat emitters. The installation of different types of hot water piping systems, such as series loop, and one and two pipe systems; an introduction of the theory and installation of radiant heating, secondary circuits, and hot water injection; and repair and operation of natural gas piping, boilers, flue gas analysis and combustion efficiency testing.(Formerly PLH239) 3 Credits (2 Lecture - 3 Lab) Prerequisite(s): PLH113. Corequisite(s): ACR239.